DNA and Chromosomes Quiz

What is the structure of DNA often shown as?

• Double helix
• Straight line
• Spiral
• Circle

How many different nucleotides are in DNA?

• 2
• 3
• 4
• 5

What is the role of DNA in an organism?

• Genetic instructions
• Protein synthesis
• Cell structure
• Energy production

What is the role of chromosomes in heredity?

• Genetic variation
• Protein synthesis
• Energy production
• Packaging and organizing DNA

Which nucleotide always pairs with thymine in DNA?

• Cytosine
• Uracil
• Adenine
• Guanine

What are specific sequences of nucleotides that provide the instructions for making proteins?

• Histones
• Ribosomes
• Chromosomes
• Genes

What is the role of genes in genetics?

• Protein synthesis
• Genetic instructions
• Genetic variation
• Energy production

What is the function of genes?

• Protein synthesis
• Energy storage
• Cell structure
• Waste elimination

What is the role of genes in heredity?

• Energy production
• Genetic variation
• Packaging and organizing DNA
• Protein synthesis

What are the building blocks of DNA?

• Fatty acids
• Nucleotides
• Monosaccharides
• Amino acids